ILuffZhe commented on code in PR #3558:
URL: https://github.com/apache/calcite/pull/3558#discussion_r1412898924
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core/src/main/java/org/apache/calcite/sql/SqlBinaryOperator.java:
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@@ -171,6 +177,22 @@ private RelDataType convertType(SqlValidator validator,
SqlCall call, RelDataTyp
return type;
}
+ @Nullable Charset getCharsetAfterConvert(SqlBasicCall call, @Nullable
Charset typeCharset) {
Review Comment:
As far as I know, only CONVERT and TRANSLATE function explicitly use charset.
In MySQL, CAST function can be used like `cast(name as CHAR CHARACTER SET
utf8)`, but we don't support such form currently.
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